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40-50 Irving St

Inner Sunset, SF 94122 1750013 6 units · 3 fl · 1908

This building has significantly more problems than most nearby buildings. Few open issues; problems get fixed quickly. A reasonable bet for a smooth tenancy.

NOVs (7y) vs. neighborhood
Compared to a typical building in Inner Sunset
At or below average
avg 1.1
1
FewerMore

This building has 1 novs (7y), at or below the Inner Sunset average of 1.1.

Rent & eviction protection

Is 40-50 Irving St rent-controlled?

San Francisco's Rent Ordinance caps rent increases and provides eviction protection for most residential units built before 1979 with 2+ units. Here's how this building scores.

Built before 1979
Built 1908
2 or more units
6 units
Property type
Multi-Family Residential
Zoning
RH2
Likely rent-controlled. Building age and unit count suggest this property falls under San Francisco's Rent Ordinance.

Based on SF Assessor records. Not legal advice — confirm with the SF Rent Board.

Building characteristics
Units6
Floors3
Year built1908
Total area9,157 sq ft
Property typeMulti-Family Residential
Tax statusNone
Blocklot1750013
Ownership

Registered owner per SF Assessor-Recorder (secured roll).

Owner name
Mak Chris & Tam Renee
Mailing address
945 Taraval St # 801 San Francisco CA 94116
Last sale
051719

Landlord portfolio

Other SF properties this owner holds, with risk grades for each.

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Multiple entrances & addresses

Included addresses

All street addresses sharing this blocklot that are covered by this report.

40 Irving St, San Francisco, CA 94122
50 Irving St, San Francisco, CA 94122
Augrented Insights
Initial analysis

The four-story, 11-unit multi-family residential building at 40-50 Irving Street in the Inner Sunset, owned by Chris and Tam Renee Mak, has undergone several significant renovations and maintenance work since its 1908 construction. Most recently, in 2023, the building experienced plumbing issues requiring a housetrap replacement after a violation was filed in April due to a clogged system and sanitary sewer problems. The building has seen consistent maintenance and upgrades over the years, including a substantial $35,000 total remodel of kitchens and bathrooms in 2016-2017, installation of grab bars in 2013 to comply with ADA requirements, and kitchen renovations across multiple units. Recent concerns have been primarily related to waste management, with ten instances of overflowing city garbage cans reported between December 2024 and January 2025. The building's safety systems have experienced occasional false alarms and smoke detector activations, though none resulted in injuries or actual fires. Historical records show various infrastructure improvements, including street space repairs in 2007-2008 and stair repairs in 2000. The property has maintained compliance with housing codes, with violations being promptly addressed and abated, including the 2023 plumbing issue which was resolved within one month.

AI-generated · may contain errors · check the source data tables below

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Risk rating

How 40-50 Irving St's risk score is calculated

We trained a model on 7 years of SF DBI inspection data — notice of violation filings, complaint history, and owner track records. It estimates the probability that DBI inspectors will issue a Notice of Violation at this address in the next 12 months. Lower % = safer.

What the score means for you

Grade A–B — Low risk

DBI rarely finds violations here. Strong maintenance history and a clean complaint record.

Grade C — Moderate risk

Some past violations or complaints on record. Worth asking the landlord about any open issues before signing.

Grade D–F — High risk

Elevated violation and complaint history. DBI has found issues here before and is statistically likely to again.

Neighborhood percentile
18th percentile

Out of 1493 buildings in this neighborhood, 1224 are predicted to be safer.

RiskiestSafest
Predicted 12-month outcome
63%
No DBI
violation
37%
DBI violation
likely
Model explanation

What's driving this score

The three data points that most influenced this building's risk rating — ranked by the weight the model placed on each one.

Number of units

The number of units affects how the model reads complaint and violation totals — more units means more potential sources.

Building size

Total floor area — a proxy for building scale and the number of systems (plumbing, electrical, HVAC) that can fail.

DBI tenant complaints (past 7 years)

Formal complaints tenants filed with DBI about this building over 7 years.

12-Month severity forecast
No violation 56.3%
Moderate concern 29.5%
Severe concern 14.3%
Estimated probability of receiving a DBI Notice of Violation in the next 12 months at each severity level. Model: full_hgb_balanced.
Apartment reviews

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The story over time

40-50 Irving St event timeline

Violations, complaints, fire incidents, permits, and buyouts — most recent records in order.

2026
311 Request May 11
Homelessness and supportive housing
housing homeless request for service
311 RequestApr 27
Sidewalk defect

See all 10 events

Full history back to 2023 — violations, complaints, permits, buyouts, and fire incidents.

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Every record we have

Full data for 40-50 Irving St apartments

13 SF public datasets for this parcel — permits, violations, complaints, fire records, 311 calls, planning records, and buyouts.

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Cancel anytime · Data sourced from SF Open Data, DBI, SFFD, SF Rent Board & Planning

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